global using System;
global using System.Collections.Generic;
global using System.Diagnostics.CodeAnalysis;
global using System.Diagnostics.CodeGen;
global using System.IO;
global using System.Linq;
global using System.Numerics;
global using System.Runtime.CompilerServices;
global using System.Threading;
global using Sudoku.Algorithms.Solving;
global using Sudoku.Concepts;
